| 单词 | percentage change |
| 释义 | percentage change The change in a variable, expressed as a percentage of its previous value. If the variable is xt, the change is defined as Δxt = xt - xt - 1, and the percentage change as 100Δxt /xt - 1. For example, if xt is 50 and xt -1 was 40, the percentage change is 100(10)/40 = 25 per cent. |
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